Hyunmoo-5 "monster rocket" from South Korea

Hyunmu-5 at the parade on October 1, 2024.
South Korea is actively investing effort and resources into creating and maintaining a strategic deterrent system, aimed primarily at North Korea. As part of these programs, various classes of weapons and systems are being developed. For example, the latest mobile missile The Hyunmu-5 complex. Due to its special missions, it boasts enhanced tactical and technical characteristics.
Strategic deterrent
According to various estimates, development of the future Hyunmu-5 system, a continuation of the system line of the same name, began no later than the early 1920s. As early as 2022, official statements first mentioned the development of a new system with improved performance. Judging by the information available now, it was the new Hyunmu-5 that was being discussed at the time.
The main work on the project was completed by 2023-2024. South Korean industry completed the design and construction of prototypes. The first self-propelled combat vehicles were expected to be ready no later than autumn 24.
On October 1, 2024, a military parade was held in Seoul to commemorate the anniversary of the founding of the Republic of Korea Armed Forces. During the event, the army displayed all its current and future weapons and military equipment, including strategic ones.
The parade featured the first demonstration of a new mobile missile system, the Hyunmu-5. Two self-propelled launchers with large transport and launch containers rolled through Seoul. The missiles were not on display. The official statement stated that they were "super-high-yield ballistic missiles."
The complex's appearance and hints of its potential impressed the press and the public, prompting epithets like "monster rocket."

Soon, the South Korean press published some details of the new project. It was reported that the Hyunmu-5 system is a continuation of the existing line of missile systems of the same name and differs significantly from those products. Specifically, key performance characteristics have been improved, and combat capabilities have also been significantly enhanced.
Missiles in the army
A few days ago, South Korean media reported the start of deliveries of Hyunmu-5 systems to combat units. The first units were delivered to the army at the very end of last year. New shipments of equipment and missiles for them are now expected. This will make it possible to carry out the desired rearmament in the coming years.
The exact number of systems the army requires is still unknown. Production costs, program expenses, and other information are also classified. However, it is reported that full operational readiness of all units and subunits will be achieved no later than 2030.
It is already known how the Republic of Korea will use the new Hyunmu-5. Systems of this class can be used for a preemptive disarming strike against an adversary or in a retaliatory/launch-on-warning strike. North Korea is considered a potential adversary whose facilities will be priority targets.
The target range for the new missiles is also roughly known. It has been reported that the Hyunmu-5 missile features an increased payload and increased firepower. The heavy warhead is capable of penetrating soil and destroying underground structures. This means that the new missile system will become a specialized tool for destroying command and control facilities and other infrastructure of a potential enemy.
The complex and its rocket
The Hyunmu-5 is a mobile land-based missile system designed to engage remote enemy targets. Its development utilized existing design solutions, but included a number of important innovations. These innovations resulted in improved key technical and combat characteristics.

Modern South Korean missile systems. In the foreground is the Hyunmu-4, behind it is the Hyunmu-5.
The self-propelled launcher is based on a special K901 chassis from Kia Motors. It is a nine-axle vehicle with a cabover configuration and a long cargo bed. It is capable of transporting a significant missile and associated equipment, and also exhibits excellent performance and maneuverability.
The launcher is mounted on the chassis platform. It has a ring-shaped launch pad with three supports and mounts for the transport and launch container. A pair of hydraulic cylinders verticalize the transport and launch container and lower the pad to the ground. Apparently, after launch, the combat vehicle can accept a new container and return to the launch site.
The new system's munition has not yet been officially demonstrated. Its full specifications also remain unknown, although some information and estimates are available.
Judging by the size of the transport and launch vehicle, the "monster rocket" is at least 15-16 meters long. Furthermore, it differs from other Hyunmu products by its larger diameter. Its weight is unknown. However, as early as 2022, officials were talking about the development of a promising rocket with a launch weight of 35 tons. They were likely referring specifically to the Hyunmu product.
The design and number of stages are unknown. The dimensions suggest the possibility of using two stages. Both stages should be powered by solid-fuel motors—the simplest and most effective solution for such a system. A detachable warhead may be used, which would optimize the missile's energy performance and improve key characteristics.
The Hyunmu-5's flight characteristics are still classified, leaving room for speculation. For example, some international opinion places its range at 500-600 km. However, even more ambitious estimates exist—up to 3 km. Various arguments are put forward in favor of both versions, which, overall, appear plausible.

Missile systems at an exhibition in September 2025.
Announcements in 2022 stated that the new 35-ton missile would receive an 8-ton warhead. It was likely this warhead that led to the increased size of the Hyunmu-5 missile and affected the overall design of the system. This is intended to be a penetrating warhead in a reinforced, larger casing.
Such a warhead is intended to be used against various types of buried structures—command posts, secure bases, industrial facilities, etc. According to various estimates, an 8-ton weapon, with a velocity typical of tactical or medium-range missiles, can penetrate at least 100-150 meters of soil.
Furthermore, a large explosive charge must create a shock wave in the ground. Depending on various factors, the underground facility may be hit directly and detonated, or damaged by the shock wave.
The ballistic missile may use a standard guidance system for such missiles. It should carry inertial and possibly satellite navigation devices. In terms of guidance principles, the Hyunmu-5 should be no different from other ballistic missiles of all classes.
Political instrument
The Republic of Korea continues its standoff with North Korea and maintains strained relations with several other countries in the region. This necessitates the development of its armed forces in general and strategic deterrence capabilities in particular.
The Hyunmu family of missile systems plays a significant role in deterrence. This line was recently expanded with a new product with improved performance characteristics. The Hyunmu-5 system recently began arriving in units and complements existing weapons.
Over the next few years, the South Korean military plans to acquire and field a significant number of new missile systems. After that, the Hyunmu-5 will become a fully-fledged instrument of military deterrence and military policy. Time will tell how successful it will be.
Information